196389540 has 36 divisors (see below), whose sum is σ = 595715484. Its totient is φ = 52370496.

The previous prime is 196389533. The next prime is 196389541. The reversal of 196389540 is 45983691.

It is a happy number.

196389540 is a `hidden beast` number, since 1 + 9 + 638 + 9 + 5 + 4 + 0 = 666.

196389540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52533504 + 143856036 = 7248^2 + 11994^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (196389541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 545347 + ... + 545706.

Almost surely, 2^196389540 is an apocalyptic number.

196389540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196389540 is an abundant number, since it is smaller than the sum of its proper divisors (399325944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196389540 is a wasteful number, since it uses less digits than its factorization.

196389540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091068 (or 1091063 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 196389540 is about 14013.9052372991. The cubic root of 196389540 is about 581.2631408753.

The spelling of 196389540 in words is "one hundred ninety-six million, three hundred eighty-nine thousand, five hundred forty".